US5986404A - Low voltage halogen lamp having a pin base and a lead-in conductor partially fused into the pin base - Google Patents
Low voltage halogen lamp having a pin base and a lead-in conductor partially fused into the pin base Download PDFInfo
- Publication number
- US5986404A US5986404A US09/022,092 US2209298A US5986404A US 5986404 A US5986404 A US 5986404A US 2209298 A US2209298 A US 2209298A US 5986404 A US5986404 A US 5986404A
- Authority
- US
- United States
- Prior art keywords
- lead
- pin
- base
- conductor
- glass base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 44
- 229910052736 halogen Inorganic materials 0.000 title claims description 7
- 150000002367 halogens Chemical class 0.000 title claims description 7
- 239000011521 glass Substances 0.000 claims abstract description 31
- 239000000654 additive Substances 0.000 claims abstract description 10
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 6
- 239000010962 carbon steel Substances 0.000 claims abstract description 6
- 238000005275 alloying Methods 0.000 claims abstract description 5
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims abstract 2
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910003286 Ni-Mn Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/40—Leading-in conductors
Definitions
- the present invention relates to a current lead-in conductor for an illumination lamp with a glass base, which conductor is made of metal.
- Illumination lamps include incandescent lamps, gas discharge lamps, flash lamps and the like.
- An illumination lamp has a hollow glass body and a substantially massive or solid glass base connected with the hollow glass body.
- the current lead-in conductor is partially fused into the glass base and partially projects outwardly from the base.
- the current lead-in conductor is a heavy solid body made of an appropriate alloy.
- the known current lead-in conductors for the illumination lamps are made of an alloy consisting of 98% Ni by weight and 2% Mn by weight. Nickel is a rather expensive metal and, of course, it is desirable to be able to make the current lead-in conductors of a cheaper material.
- the current lead-in conductors should meet certain requirements which the desired cheap materials (substitute metals) should satisfy. These requirements are:
- the substitute metal should, during fusing-in of the conductor into the glass base, withstand the fusing temperatures of about 1,200° C.
- the substitute metal should have a good electrical conductance to insure current supply into the interior of the illumination lamp.
- the substitute metal should have a good heat conductance to be able to carry away heat from the lamp interior.
- the substitute metal should be able to withstand operational temperatures of 150-200° C. which prevail at the outwardly projecting portion of the current lead-in conductor.
- the substitute metal should have a very good corrosion resistance in the presence of oxygen and heat.
- an object of the present invention is to provide a relatively cheap metallic material for making the current lead-in conductors which would meet all of the above-listed requirements.
- This and other objects of the present invention is achieved by using for making the current lead-in conductors a stainless austenitic steel including additives of Cr and/or Ni or by forming the current lead-in conductors as a carrier core made of a carbon steel containing non-austenitic alloying additives and surrounded with a sheath formed of nickel.
- the metal, from which the lead-in conductors according to the present invention are made is much cheaper, e.g., by 20% cheaper than an alloy consisting of 98% of nickel or a pure nickel.
- Extensive experiments have shown that the lead-in conductor according to the present invention, despite the use of steel materials, is still capable of meeting the requirements with regard to the production, fusing temperatures, electrical conductance, heat conductance, operational temperatures, and corrosion resistance.
- the lead-in conductor according to the present invention because of the use of a steel material, has somewhat lower values of electrical conductance and heat conductance than the known lead-in conductors formed of a Ni-Mn alloy. However, somewhat lower values of electrical and heat conductances are very much acceptable because they are still capable of meeting the set requirements.
- the stainless steel according to the invention is produced in a form of a wire. As discussed above, in many cases, it includes both Cr and Ni and, often, other additives.
- the special steel is always corrosion resistant.
- the carbon steel as per se known, contains alloying additives.
- the nickel-plated sheath which defines the electrical conductance of the inventive lead-in conductor is formed of a pure nickel or contains up to 2% Mn.
- the minimal sheath thickness is about several microns and it may reach up to about 15% of the cross-section of the lead-in conductor.
- the stainless steel which is used for manufacturing the lead-in conductor according to the present invention, e.g., x5 CrNi 18/10, material No. 1.4301, DIN 17440, contains 7%C, 17-19% Cr, 8.5-10.5 Ni.
- the current lead-in conductor according to the present invention is made of a drawn wire and has a diameter up to 4 mm and a length up to 400 mm.
- the known current lead-in conductors also have these dimensions.
- the current lead-in conductor according to the present invention is welded, at an end thereof extending in the glass base to a a lead-in wire.
- the current lead-in conductor and the sealed pin form together a current lead-in, which itself is a finished product.
- the a lead-in wire is made e.g., of molybdenum, tungsten or a FeNi-wire having a copper sheath (DUMETTM).
- the current lead-in conductor according to the present invention is relatively easy welded to the a lead-in wire.
- the a lead-in wire is partially fused-into the lamp glass base and projects into the interior of the lamp.
- a particular preferable and advantageous use of a lead-in conductor according to the present invention takes place when the illumination lamp is a low power lamp up to 50 W and/or when the illumination lamp is a pin-base, low voltage, halogen lamp. Because steel material has a relatively poor heat conductance, the later form of the illumination lamp is particularly suitable for use with the inventive lead-in conductor. It is the relatively poor conductance that make this lamp acceptable for its intended use.
- a cold light reflector lamp also relates to a pin-base, low voltage halogen lamp.
- FIG. 1 shows schematically a side, partially cross-sectional view of a first embodiment of an illumination lamp, together with lead-in current conductors, according to the present invention
- FIG. 2 shows schematically a cross-sectional view of a second embodiment of all illumination lamp, together with lead-in conductors, according to the present invention.
- FIG. 3 shows a cross-sectional view of a section of a lead-in conductor.
- An illumination lamp according to the present invention which is shown in the drawings has a hollow glass body 1 which smoothly passes into a massive glass base 2.
- Two current lead-ins 3 are cast-into the glass base 2.
- Each lead-in 3 consists of a current lead-in conductor 4 and a a lead-in wire 5 the cross-section of which is smaller than that of the conductor 4.
- the adjacent ends of the conductor 4 and the a lead-in wire 5 abut each other and are connected with each other by a weld 6. Both lead-in wires project into the glass body 1, with their free ends carrying a filament 7 made of tungsten.
- FIG. 1 shows a pin-base, low voltage halogen lamp.
- the lead-in wires 5 project into the glass body 1 and are directly connected with the filament 7.
- FIG. 2 shows a cold light reflector lamp formed as a pin-base, low voltage halogen lamp with a glass reflector 8, which is secured to the glass base 2 with putty 9.
- the lead-in wires 5 end in the glass base 2 and are connected with the filament 7 by an intermediate member 10.
- FIG. 3 shows a section of lead-in conductor 4 according to the present invention which is formed as a Ni-plated core. It includes a core 11 and a sheath 12.
- the current lead-in conductors according to the invention are made of a austenitic steel including Cr and/or Ni additive or of carbon steel with non-austenitic alloying additives. In the later case they are made as core with a Ni sheath.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
Description
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19754806A DE19754806C2 (en) | 1997-12-10 | 1997-12-10 | Pin base low-voltage halogen lamp with power supply conductor |
DE19754806 | 1997-12-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5986404A true US5986404A (en) | 1999-11-16 |
Family
ID=7851390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/022,092 Expired - Fee Related US5986404A (en) | 1997-12-10 | 1998-02-11 | Low voltage halogen lamp having a pin base and a lead-in conductor partially fused into the pin base |
Country Status (4)
Country | Link |
---|---|
US (1) | US5986404A (en) |
EP (1) | EP0923109B1 (en) |
DE (1) | DE19754806C2 (en) |
ES (1) | ES2215262T3 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001039246A1 (en) * | 1999-11-22 | 2001-05-31 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp |
US20040080253A1 (en) * | 2002-10-23 | 2004-04-29 | Jurkovic Paul J. | Seal and flag assembly for lamp base sidewire welding |
US20060028135A1 (en) * | 2004-08-04 | 2006-02-09 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhl | Electric lamp which is closed at one end |
CN108987244A (en) * | 2017-06-02 | 2018-12-11 | 东芝照明技术株式会社 | Lead, the manufacturing method of lead and motor-vehicle bulb |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1246220A1 (en) * | 2001-03-26 | 2002-10-02 | N.V. Bekaert S.A. | Lead-in wire |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443738A (en) * | 1981-07-10 | 1984-04-17 | Thorn Emi Plc | Fluorescent lamp having support wires made with austenitic steel |
US5479066A (en) * | 1993-03-31 | 1995-12-26 | U.S. Philips Corporation | Electric lamp |
US5528105A (en) * | 1994-07-15 | 1996-06-18 | General Electric Company | Copper-steel composite lead wire and use in incandescent filament electric lamps |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1547394A (en) * | 1921-08-02 | 1925-07-28 | Gen Electric | Leading-in wire for electrical incandescent lamps and similar devices |
US3366826A (en) * | 1966-03-02 | 1968-01-30 | Westinghouse Electric Corp | Incandescent lamp having stainless steel tie wires |
US4415830A (en) * | 1981-08-31 | 1983-11-15 | General Electric Company | Inlead construction for electric lamp |
JPS60110815A (en) * | 1983-11-18 | 1985-06-17 | Sumitomo Electric Ind Ltd | Plated iron wire |
DE9101460U1 (en) * | 1991-02-08 | 1991-05-02 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Single-ended electric lamp |
-
1997
- 1997-12-10 DE DE19754806A patent/DE19754806C2/en not_active Revoked
-
1998
- 1998-02-11 US US09/022,092 patent/US5986404A/en not_active Expired - Fee Related
- 1998-11-20 EP EP98122035A patent/EP0923109B1/en not_active Revoked
- 1998-11-20 ES ES98122035T patent/ES2215262T3/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443738A (en) * | 1981-07-10 | 1984-04-17 | Thorn Emi Plc | Fluorescent lamp having support wires made with austenitic steel |
US5479066A (en) * | 1993-03-31 | 1995-12-26 | U.S. Philips Corporation | Electric lamp |
US5528105A (en) * | 1994-07-15 | 1996-06-18 | General Electric Company | Copper-steel composite lead wire and use in incandescent filament electric lamps |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001039246A1 (en) * | 1999-11-22 | 2001-05-31 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp |
US6614188B1 (en) * | 1999-11-22 | 2003-09-02 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp |
US20040080253A1 (en) * | 2002-10-23 | 2004-04-29 | Jurkovic Paul J. | Seal and flag assembly for lamp base sidewire welding |
US6791250B2 (en) | 2002-10-23 | 2004-09-14 | Eye Lighting International | Seal and flag assembly for lamp base sidewire welding |
US20060028135A1 (en) * | 2004-08-04 | 2006-02-09 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhl | Electric lamp which is closed at one end |
US7382092B2 (en) | 2004-08-04 | 2008-06-03 | Patent-Treuhand-Gesellshaft für elektrische Glühlampen mbH | Electric lamp which is closed at one end |
CN108987244A (en) * | 2017-06-02 | 2018-12-11 | 东芝照明技术株式会社 | Lead, the manufacturing method of lead and motor-vehicle bulb |
CN108987244B (en) * | 2017-06-02 | 2022-03-29 | 东芝照明技术株式会社 | Lead wire, method for manufacturing lead wire, and bulb for vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP0923109A1 (en) | 1999-06-16 |
DE19754806C2 (en) | 1999-11-11 |
ES2215262T3 (en) | 2004-10-01 |
DE19754806A1 (en) | 1999-07-01 |
EP0923109B1 (en) | 2004-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4015165A (en) | Electric lamp with molybdenum contact pins surrounded by non-corrosive metal sleeves | |
US5986404A (en) | Low voltage halogen lamp having a pin base and a lead-in conductor partially fused into the pin base | |
US3991337A (en) | Electric lamp | |
KR100480523B1 (en) | Electric lamp | |
US6969950B2 (en) | Sealing foil and associated lamp having this foil | |
US5932956A (en) | Conductive pins for an illumination lamp | |
US20060208640A1 (en) | Electrode system provided with a novel connection, associated lamp comprising said film and method for the production of said connection | |
US7378798B2 (en) | Electric lamp | |
US5528105A (en) | Copper-steel composite lead wire and use in incandescent filament electric lamps | |
EP0084081B1 (en) | Lamp with a fuse wire | |
US2120561A (en) | Composite metallic bodies | |
US20060028135A1 (en) | Electric lamp which is closed at one end | |
US4030059A (en) | Fuse | |
CA1067562A (en) | Electric lamp | |
US761379A (en) | Electric-arc lamp. | |
US6614188B1 (en) | High-pressure discharge lamp | |
EP1056111B1 (en) | Method for producing lamps | |
JP3555051B2 (en) | Metal wires and tubes for sealing glass and electrical components | |
US1022553A (en) | Method of fusing lamp-filaments to leading-in wires. | |
EP0074216B1 (en) | Inleads material for electric lamps | |
HU182834B (en) | Electric current lead-in, preferably for discharge vessel of high-pressure gas-discharge light-sources | |
EP1246220A1 (en) | Lead-in wire | |
US844778A (en) | Luminant in electric incandescent lamps. | |
US6777875B1 (en) | Electric lamp | |
US4369421A (en) | Safety device with delay |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KING, GLEN, MAINE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GENTLY, JONATHAN;REEL/FRAME:009175/0669 Effective date: 19980217 |
|
AS | Assignment |
Owner name: DIETZE, BRUNO, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DIETZE, WERNER;REEL/FRAME:009163/0336 Effective date: 19980305 |
|
FEPP | Fee payment procedure |
Free format text: PAT HOLDER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO SMALL (ORIGINAL EVENT CODE: LTOS); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20111116 |